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How can I join elements of an array in Bash?
...when the delimiter starts with a hyphen (and maybe others I can't think of now). You can of course fix these (replace backslashes by double backslashes and use printf -- "$d%s"), but at some point you'll feel that you're fighting against the shell instead of working with it. That's why, in my answer...
Is there a git-merge --dry-run option?
...base is the hexadecimal id that merge-base printed in the previous step)
Now suppose that you want to merge the remote master with your local master, but you can use any branches. git merge-tree will execute the merge in memory and print the result to the standard output. Grep for the pattern <...
Django get the static files URL in view
...cfiles.templatetags.staticfiles import static
url = static('x.jpg')
# url now contains '/static/x.jpg', assuming a static path of '/static/'
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How do I pull from a Git repository through an HTTP proxy?
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I have been looking for this for some time now. Thanks.
– M Smith
Sep 12 '13 at 3:06
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Tool for generating railroad diagram used on json.org [closed]
...n Online Railroad Diagram Generator. It creates SVG syntax diagrams, also known as railroad diagrams, from context-free grammars specified in EBNF. You can copy the SVG code or take screen shots.
You have to type in the grammar and it'll make the diagram.
For example, to create the first railroad ...
MySQL vs MySQLi when using PHP [closed]
...QL Improved Extension Overview, it should tell you everything you need to know about the differences between the two.
The main useful features are:
an Object-oriented interface
support for prepared statements
support for multiple statements
support for transactions
enhanced debugging capabiliti...
Another Repeated column in mapping for entity error
...placed JPA annotations on but did NOT define the relationships and you are now trying to define them for use in your code, then you might NOT be able to delete the customerId @Column since other code may directly reference it already. In that case, define the relationships as follows:
@ManyToOne(o...
Determine the number of lines within a text file
... rather than greedily reading them all into an array like ReadAllLines. So now you can have both efficiency and conciseness with:
var lineCount = File.ReadLines(@"C:\file.txt").Count();
Original Answer
If you're not too bothered about efficiency, you can simply write:
var lineCount = File.Rea...
Are HTTP cookies port specific?
I have two HTTP services running on one machine. I just want to know if they share their cookies or whether the browser distinguishes between the two server sockets.
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npm ERR cb() never called
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IMPORTANT! The solution below is now regarded as unstable, and you should use Node Version Management instead: Node Version Manager on Github. David Walsh also has a good introduction to NVM. NVM works beautifully and I've been using it to manage legacy Word...